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Kinetics of ultrasound-assisted enzymatic biodiesel production from Macauba coconut oil

Author

Listed:
  • Michelin, Simone
  • Penha, Frederico M.
  • Sychoski, Melania M.
  • Scherer, Robison P.
  • Treichel, Helen
  • Valério, Alexsandra
  • Di Luccio, M.
  • de Oliveira, Débora
  • Oliveira, J. Vladimir

Abstract

This work reports the production of fatty acid ethyl esters (FAEE) by means of Macauba (Acrocomia aculeata) coconut oil (MCO) solvent-free enzymatic transesterification reactions using a commercial immobilized lipase (Novozym 435) under the influence of ultrasound irradiation. An experimental design was used to evaluate the effects of temperature (40–70 °C), enzyme (5–20 wt%) concentration, oil to ethanol molar ratio (1:3–1:10) and output irradiation power (40–70 % of the maximum supply value) on the reaction yield. Besides, a kinetic study varying the enzyme concentration was also carried out. Results show that ultrasound-assisted lipase-catalyzed transesterification of MCO with ethanol in solvent-free system might be a potential alternative route to conventional alkali-catalyzed and/or traditional enzymatic methods, as reaction yields around 70 wt% were obtained at mild irradiation power supply (∼ 132 W), and temperature (65 °C) in a short reaction time, 30 min. Reutilization of enzyme showed that it may be advantageously employed up to 5 reuse cycles.

Suggested Citation

  • Michelin, Simone & Penha, Frederico M. & Sychoski, Melania M. & Scherer, Robison P. & Treichel, Helen & Valério, Alexsandra & Di Luccio, M. & de Oliveira, Débora & Oliveira, J. Vladimir, 2015. "Kinetics of ultrasound-assisted enzymatic biodiesel production from Macauba coconut oil," Renewable Energy, Elsevier, vol. 76(C), pages 388-393.
    • Handle: RePEc:eee:renene:v:76:y:2015:i:c:p:388-393
    DOI: 10.1016/j.renene.2014.11.067
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    Cited by:

    1. Padula, Miquele L. & Romero, Arthur S. & Hotza, Dachamir & Innocentini, Murilo D.M. & Pinto, Maria E.G. & Pedrini, Augusto S. & Rebelatto, Evertan & Ribeiro, Luiz Fernando B. & Zin, Guilherme & Olivei, 2022. "Dehydration of fatty acid methyl ester mixtures from enzymatic biodiesel using a modified PVDF membrane," Renewable Energy, Elsevier, vol. 187(C), pages 237-247.
    2. Murillo, Gabriel & Ali, Sameh S. & Sun, Jianzhong & Yan, Yunjun & Bartocci, Pietro & El-Zawawy, Nessma & Azab, Maha & He, Yaojia & Fantozzi, Francesco, 2019. "Ultrasonic emulsification assisted immobilized Burkholderia cepacia lipase catalyzed transesterification of soybean oil for biodiesel production in a novel reactor design," Renewable Energy, Elsevier, vol. 135(C), pages 1025-1034.
    3. Vávra, Aleš & Hájek, Martin & Skopal, Frantisek, 2017. "The removal of free fatty acids from methyl ester," Renewable Energy, Elsevier, vol. 103(C), pages 695-700.
    4. Mathimani, Thangavel & Uma, Lakshmanan & Prabaharan, Dharmar, 2015. "Homogeneous acid catalysed transesterification of marine microalga Chlorella sp. BDUG 91771 lipid – An efficient biodiesel yield and its characterization," Renewable Energy, Elsevier, vol. 81(C), pages 523-533.
    5. Verma, Puneet & Sharma, M.P. & Dwivedi, Gaurav, 2016. "Impact of alcohol on biodiesel production and properties," Renewable and Sustainable Energy Reviews, Elsevier, vol. 56(C), pages 319-333.

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